JPS62179971A - Line feed controller for printer - Google Patents

Abstract

PURPOSE:To obtain the titled controller capable of shortening the period of time required for line feeding by combining pieces of line feed data supplied in succession and executing the line feed in a single line-feeding operation. CONSTITUTION:When an LF code designating the first one-line feed is sent as an input data 1a, a line feed data signal 2b is outputted from an input data analyzing circuit to a set terminal of a continuous line feed mode storage circuit 5, and a continuous line feed mode is set. A line feed data set signal 5a from the circuit 5 is supplied to a line feed number storage circuit 4, which stores a one-line feed 2a. The second and third LF codes supplied from a host device 1 are similarly processed, the numbers of lines of feed are summed up, and three-line feed is stored. When the fourth input data 1a is sent from the host device 1, a line-feeding command 9a and the number of lines of feed stored in the circuit 4 are sent to a line feed driving circuit. Simultaneously, the content in the circuit 4 is reset to 0. Thus, the data for performing a one-line feeding operation three times are converted into data for performing a three-line feeding operation one time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a line feed control device for a printer, and more particularly to a line feed control device for a printer that performs printing and line feed operations based on input data from a host device.

[Conventional technology]

Conventionally, a line feed control device of a printer has executed a printer line feed operation every time line feed data is sent from a host device. For example, if 10 pieces of single line feed data are sent in succession, the single line feed operation is repeated 10 times.

[Problem that the invention seeks to solve]

In the conventional printer line feed device described above, when line feed data is continuously sent from a host device, the printer takes a long time to execute the line feed, which adversely affects the processing time.

The present invention provides a line feed control device for a printer that eliminates such problems and can shorten the line feed execution time by integrating continuously sent line feed data and executing it in a single feed operation. This is what we provide.

[Means for solving problems]

The printer line feed control device of the present invention includes an input data analysis circuit that analyzes input input data and outputs line feed data and a line feed data signal or print data signal, and a continuous line feed mode is set by the line feed data signal and the print data a continuous line feed mode memory circuit that is reset by a signal; a line feed number memory circuit that adds and stores the line feed date to the generally stored content; an input data monitoring timer circuit that resets the continuous line feed mode of the continuous line feed mode storage circuit if there is no input data, and a line feed command when the continuous line feed mode of the continuous line feed mode storage circuit is reset. and a line feed command sending circuit that outputs the memory contents of the line feed number memory circuit and resets the memory contents of the line feed number memory circuit.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention, and FIGS. 2 and 3 are timing charts in the embodiment shown in FIG. After turning on the power, the printer outputs a power-on-safe l-signal]Oa when it becomes ready to receive data, and supplies it to the OR circuit 7. The output a of the OR circuit 7 is applied to the set terminal of the input data request circuit 8, and the input data request signal 8a is sent to the host device 1. The host device 1 receives the input data request signal 8a, so it sends the input data 1a to the printer.
Send out. The input data 1a is analyzed by the input data analysis circuit 2, and the sent input data la is converted into line feed data (1-
F code), line feed data (one line) 2a and line feed data signal 2b are output. Further, if the input data 1a is print data, a print data signal 2C is output.

For example, a case will be explained in which the input data 1a from the host device 1 is the following data (see the timing chart in FIG. 2).

Input data... LP, LF, LF
.

(1 line feed) (1 line feed) (1 line feed) When an L code instructing the first line feed is sent to the print code input data 1a, a line feed data signal 2b is output from the input data analysis circuit 2, The signal is supplied to the set terminal of the continuous line feed mode storage circuit 5, and the continuous line feed mode is set. Furthermore, the line feed data set signal 5 of the continuous line feed mode storage circuit 5
a is added to the line feed number storage circuit 4, and the line feed number storage circuit 4 stores line feed data (one line feed) 2a. When the input data 1a from the host device 1 is no longer output, the input data analysis circuit 2 also no longer outputs the line feed data signal 2b, which causes the input data monitoring timer circuit 6 to operate, start timer monitoring, and set the data request. signal 6b
is output, and the input data request circuit 8 again sends the input data request signal 8a to the host device 1. As a result, the host device 1 sends the second LF code to the input data 1a, and is processed in the same manner as above. In this case, the previous line feed count of 1 line and the current line feed count of 1 line are added to the line feed number storage circuit 4, and 2 line feeds are stored. Similarly, the LP code from the third host device 1 is processed, and the line feed number storage circuit 4
3 line breaks are memorized.

When the fourth input data 1a is sent from the host device 1,
Since this is print data, the print data signal 2C of the input data analysis circuit 2 is output, and this is applied to the reset terminal of the continuous line feed mode storage circuit 5 via the third circuit 3, so that the continuous line feed mode is reset. The line feed command sesoto signal 5b of the continuous line feed mode storage circuit 5 is output,
It is added to the line feed command sending circuit 9. As a result, the line feed command sending circuit 9 sends the line feed command 9a and the line feed number (3 line feeds) 4a stored in the line feed number storage circuit 4 to the line feed drive circuit (not shown). At the same time, the contents of the line feed number storage circuit 4 are set to O. In this way, data in which one line feed is executed three times is converted into data in which three line feeds are executed once.

In addition, the timing chart shown in FIG.
The case where there is only one LF code in a and the input data 1a is not sent from the host device 1 will be described below. in this case,
After receiving the first LP code, the input data/monitoring timer circuit 6 operates, and if the input data does not come even after 'F seconds have elapsed, the time alarm I/signal 6L'L of the input data monitoring timer circuit 6 is activated. It is outputted and applied to the reset terminal of the °ζ continuous line feed mode storage circuit 5 via the OR circuit 3, the continuous line feed mode is reset, and the line feed command 9a is sent to the line feed drive circuit in the same manner as in the case of double series.

Note that it is desirable that the timeout time T seconds of the input data monitoring timer circuit 6 be shorter than the execution time of one administrative execution, taking into consideration the loss time when line feed data is not consecutive.

〔Effect of the invention〕

As explained above, the present invention includes an input data analysis circuit,
By providing a continuous line feed mode memory circuit for integrating multiple line feed data, a line feed number memory circuit for storing the number of line feeds, and an input data monitoring timer circuit for monitoring the sending of input data, it is possible to Integrate data 1
The line feed processing time can be shortened because it is executed in one line feed operation.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIGS. 2 and 3 are timing charts of the embodiment shown in FIG. 1.
It is a diagram. 1... Host device, 2... Input data analysis circuit, 3.
... OR circuit, 4... Line feed number memory circuit, 5... Continuous line feed mode memory circuit, 6... Input data monitoring timer circuit, 7... OR circuit, 8... Input data request circuit, 9...Line feed command sending circuit.

Claims (1)

[Claims] an input data analysis circuit that analyzes input input data and outputs line feed data and a line feed data signal or print data signal; and a continuous line feed mode memory in which a continuous line feed mode is set by the line feed data signal and reset by the print data signal. a circuit, a line feed number storage circuit that adds and stores the line feed date to the stored contents; an input data monitoring timer circuit that resets the continuous line feed mode of the line feed mode storage circuit, and outputs a line feed command and the memory contents of the line feed number storage circuit when the continuous line feed mode of the continuous line feed mode storage circuit is reset; A line feed control device for a printer, comprising: a line feed command sending circuit for resetting the stored contents of the line feed number storage circuit.